Machine for washing drinking vessels



' Jan. 3, 1939.

W. F. OHME MACHINE FOR WASHING DRINKING VESSELS Filed April 12, 1937 Fi ci Walte F? Ohme Patented Jan. 3, 1939 MACHINE FOR. WASHING DRINKING VESSELS Walter F. Ohme, Minneapolis; Minm, assignor to North Star Specialty & Manufacturing Company, Minneapolis, Minn., a corporation of Minnesota Application April 12, 1937, Serial No. 136,238 5 Claims. (01. 2206'7) view of a machine for washing drinking vessels and illustrating an embodiment of my invention.

Fig. 2 is an elevational sectional detail view of a portion-of the cover and shield shown in Fig. 1' anddrawn to a larger scale.

Fig. 3 is an elevational detail sectional view of a portion of the wall structure, tray and cover illustrating the method of securing the parts together and drawn to a larger scale than Fig. 1.

My invention is particularly adapted for use in conjunction with machines for washing drinking vessels and the same has been illustrated in conjunction therewith. Since certain details of construction of the machine do not form any part of the instant invention, only so much of the machine as will be needed to explain the instant invention will be described, reference being had to the application for patent of Ray C. Stephan andmyself, Serial Number 741 078, filed April'23, 1934, for disclosure of the remainder of the machine.

The machine for washing drinking vessels herein illustrated comprises a housing which I have indicated in its entirety by the reference character A and with which the present invention is concerned. The washing mechanism of the invention comprises a revoluble rack B which is driven through awater motor C. In addition thereto a spraying device D is utilized which is adapted to spray hot and cold water on the drinking vessels carried by the rack as the same rotates past the sprays. The invention further comprises a water control sytem which has not been shown and by means of which the flow of water to the spraying device A and the water motor C can be regulated and by means of which the water may be maintained at predetermined pressures at the various sprays and motor. The illustrated parts of the invention will now be described in detail.

The housing A consists of a tray ID circular in form which is constructed with a bottom II having a rim [2 extending upwardly therefrom.- The bottom H is preferably sloping toward the forward portion of the tray where a drain I3 is provided by means of which the water discharged into the housing may be removed from the device. At the outer margin of the bottom H is provided a ledge M which elevates the bottom above the" surface on which the machine rests. This ledge may, if desired, be formed in continuation of the rim l2 of said tray. The tray I0 is constructed as a casting, the various parts thereof being made integral. The housing A further comprises a circular wall [5 which is con-' My invention relates to machines for washing drinking vessels and particularly to the housing for such machines and has for an object to provide a machine and housing which will be highly sanitary, neat and attractive in appearance.

Another object of the invention resides in providing a housing consisting of several parts and in securing said parts together by fastening means in such a manner that said fastening means will be entirely concealed.

A still further object of the invention resides in providing a housing consisting of a tray, a circular wall resting thereon and a cover resting upon said circular wall, and in attaching said parts together through one or more rods extending between the tray and cover and disposed within the housing.

Another object of the invention resides in forming the tray with an upwardly extending rim, and the cover with a downwardly extending rim and in providing in said rims facing grooves in which the circular wall is received.

A still further object of the invention resides in constructing the circular wall of sheet metal and in forming beads on the circumferential edges thereof adapted to be received within the grooves of said tray and cover.

Another object of the invention resides in constructing said circular wall of less extent than a complete circle so as to form an opening therein by means of which access may be had to the interior of the housing and by means of which portions of said grooves become exposed, and in providing guard rings attached to said rims between the longitudinal edges of said circular wall and concealing the exposed portions of said grooves.

A feature of the invention resides in constructing the guard rings of rubber or some similar material and in providing flanges on said guard rings adapted to be received within said grooves.

Another object of the invention resides in providing nuts on the rods for connecting the tray and cover together and in disposing said nuts upon the exterior of the cover and in further utilizing a shield for covering said nuts.

A feature of the invention resides in providing means accessible from the interior of the housing for attaching said shield to the cover.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and/or described.

In the drawing:

Fig. l is alongitudinal elevational sectional structed from sheet metal. The lower edge of this wall is turned back upon itself, as shown in Fig. 3, to form a bead I6 which rests in an annular recess or groove I 1 formed in said rim and extending throughout the entire circumference thereof. Upon the upper end of the wall I5 is placed a cover or closure I8 which is circular throughout the extent thereof. This closure is provided with a top I 9 and a rim 2| which extend downwardly therefrom and which similar to the rim I2 is constructed with an anular groove or recess 22 extending throughout the circumferential extent of the said rim. The upper end of the wall I5 is turned back upon itself similar to the lower end thereof to form a bead 23 which is received within the groove 22. The bead I6 rests upon a gasket 24 within the groove I1 while the bead 23 bears against a similar gasket 25 within the groove 22. When the cover and tray of the housing are drawn together, the-beads I6 and 23 are forced against their respective gaskets and a water tight connection afforded between the wall l5, tray I0 and closure I8.

For the purpose of securing the parts of the housing in position, a number of longitudinal rods 26 are employed which are threaded at their ends. The rods 26 extend through the top I9 of closure I8 and are screwed into threaded bosses 21 formed on the bottom II of tray I0. Nuts 28 screwed upon the other ends of these rods bear against the top I9 and urge the closure I8 toward the tray I0, whereby the beads I6 and 23 are forced against the gaskets 24 and 25 and a water tight connection afforded between the parts of the housing.

The wall I5 is of lesser circular extent than a complete circle so that an opening 29 is provided at the front of the housing through which access may be had to the interior thereof and to the drinking vessels placed upon the rack B mounted therein. This exposes portions of the grooves I1 and 22 indicated by the reference numerals 3I and 32 and the edges of the rims I2 and 2I in which said grooves are formed. To guard these edges and to conceal the said exposed portions of the grooves two segmental shaped guard rings 33 and 34 are employed which are identical in construction. Of these rings, the ring 34 is illustrated in detail in Fig. 2. This ring is constructed from rubber and is provided with a facing 35 which overlies the edge 36 of the rim 2I and with a flange 31 issuing therefrom and which overlies the outer peripheral surface of said rim. The guard ring 34 is held in position by means of a beaded lip 38 which is formed on the facing 35 and which is adapted to be forced into the portion 32 of groove 22. When the ring 34 is properly installed, the same is rigidly held in position and protects and guards the edge of the rim 2I and prevents breakage of drinking vessels and injury to the user. The guard ring 33 functions in the same manner and is identically constructed with the guard ring 34.

To prevent injury to the user, the longitudinal edges of the wall I5 are folded back upon themselves as indicated at 39 in Fig. 1.

In order to conceal the nuts 28 a shield M is utilized which may be spun from sheet metal and is constructed with a dome 42 and a flange 43 depending therefrom. The flange 43 is received within a groove 44 in the upper portion of the rim 2I. A rod 45 is threaded at one-end and is formed at its other end with an enlarged head 46 which is soldered to the undersurface of the dome 42 of cover 4|. This rod extends through the top I9 of the cover I8 and is provided with a nut 41 which is screwed upon the threaded end thereof and which draws the shield into closing position. It will thus be seen that all of the fastening elements for the entire housing are completely concealed so that the housing upon the exterior is smooth and without projections, thereby providing a sanitary and attractive device.

The rack B consists of a table 48 which is constructed of a number of circularly disposed concentrically arranged rings 49. These rings are connected together by means of radially extending bars 5I to form a reticulate structure on which the glasses to be washed may be placed.

The table 48 is rotatably mounted on a spider 52 which comprises a. central tubular hub 53 connected to a circular flange 54 through radially extending arms 55. The hub of this spider has mounted in it ball bearings 56 and 51 which are disposed at the lower and upper ends thereof. In the center of the bottom II of the tray I II is provided a boss 58 which has secured to it an upwardly extending post 59. Post 59 is turned to receive the inner races of the two bearings 56 and 51. By means of this construction the spider 52 is rotatably mounted in a cap 6I secured to the upper end of the hub 53 which covers the bearings 56 and 51 and prevents the entry of water into the same from above. The table 48 rests upon a shoulder 62 formed on the flange 54 of the spider 52 and is centered with respect to the axis of said spider through said shoulder.

To prevent misarrangement of the drinking vessels upon the rack B a guard 63 is employed which is constructed from sheet metal bent in cylindricalform with a curvature substantially equal to the curvature of the flange 54. This guard is bolted to a flange 64 by means of a bolt 65 and a thumb nut 66 screwed thereto. Flange 64 issues downwardly from the top I9 of closure I8 and is constructed integral therewith. By means of this construction the guard 63 may be easily removed when access into the machine back of the same is desired.

The water motor C and the power transmission associated therewith have not been shown in detail. However, the motor comprises a water wheel 61 which through suitable gearing drives a shaft 68. A nozzle 69 connected with the water supply causes rotation of the water wheel 61.

Shaft 68 has mounted on it a friction pinion 69. The inner surface H of the flange 54 of spider 52 is turned concentric with the axis of the ball bearings 56 and 51 and constitutes a friction gear with which the friction pinion 69 meshes.

For the purpose of spraying water upon the drinking vessels carried upon the rack B, the spraying device D is used. This spraying device consists of two spray units 12 and 13. Spray unit 12 is disposed above the rack B and spray unit 13 is situated below said rack. The spray unit 12 consists of a number of individual sprays 14 which are connected to a manifold 15. The spray unit 13 is similarly constructed with individual sprays 16 which are connected to a manifold 11. Both the manifolds 15 and 11 are connected to one another by means of tubes 18 which lead hot and cold water from the manifold 11 to the manifold 15. Other tubes 19 lead hot and cold water from the water control device of the invention to the manifold 11.

The hot and cold water is led through pipes 8I into a valve block 82 attached to the tray III. This valve block includes a. valve mechanism 83 operated by a handle 84 by means of which flow of hot and cold water to the sprays and cold water to the nozzle 69 of the water motor C may be controlled.

The manner of installing my invention is as follows: The water motor C, the spraying device D, the rack B and the other parts associated therewith are first installed upon the tray Ill. Gaskets 24 and are next inserted in the grooves IT and 22 and the wall I5 is placed within the groove H. The cover I8 is next applied so that the groove 22 receives the bead 23 of wall 15. Rods 26 are next inserted through the top I9 and threaded into the boss 21. Thereafter nuts 28 are applied to said rods and the entire structure drawn together by tightening said nuts. Thereafter the shield 4| is applied by inserting the bolt 45 through the top I9 and the flange 43 thereof in the groove 44. Upon application of the nut 41 to the threaded end of the rod 45 the shield is securely held attached to the cover l8. Guard 63 may then be attached to the flange 64, whereupon the device is ready for use.

The advantages of my invention are manifest. An extremely neat and attractive construction is provided which has no protruding or outwardly extending parts. No bolts or fastening devices of any kind extend through any portion of the housing where water might possibly leak through the same. All of the fastening members are completely concealed and the fastening device for the shield is accessible from the interior of the housing. By means of the guard rings used, the grooves and edges of the rims of the tray and closure are completely concealed and guarded.

Changes in the specific form of my invention, as herein disclosed, may be made within the scope of what is claimed without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In a machine for washing drinking vessels, a housing comprising a tray, a cover, said tray and cover having facing concentric grooves, a cylindrical wall received in said grooves, said wall being of less circumferential extent than a complete circle to leave an opening therein and exposing portions of said grooves, and guard rings covering the edges of said rims between the ends of said circumferential wall, said guard rings having lips received within said grooves.

2. In a machine for washing drinking vessels, a housing comprising a tray, a cover, said tray and cover having facing concentric grooves, a cylindrical wall received in said grooves, said wall being of less circumferential extent than a complete circle to leave an opening therein, and exposing portions of said grooves, and guard rings constructed of rubber and covering the edges of said rims between the ends of said circumferential Wall, said guard rings having lips received within said grooves.

3. In a machine for washing drinking vessels, a housing comprising a tray having a bottom and a rim extending upwardly therefrom, a cover having a top and a rim extending downwardly therefrom, said rims having facing concentric grooves, a cylindrical wall received in said grooves, said wall being of less circumferential extent than a complete circle to leave an opening therein, and exposing portions of said grooves, guard rings covering the edges of said rims between the ends of said circumferential wall, said guard rings having lips received within said grooves, and flanges overlying the outermost portions of said rims.

4. In a machine for washing drinking vessels, a housing comprising a tray, a cover, said tray and cover having facing concentric grooves, a cylindrical wall received in said grooves, said wall being of less circumferential extent than a complete circle to leave an opening therein, a rod extending through said cover and secured to said tray, a nut screwed on the upper end of said rod and disposed above said cover, a shield attached to said cover and concealing said nut, a rod secured to said shield and extending through said cover, a nut screwed upon said second named rod and disposed beneath saidcover, said second named nut being accessible through the opening in said wall.

5. In a machine for washing drinking vessels, a housing comprising a tray, a cover, said tray and cover having facing concentric grooves, a cylindrical wall received in said grooves, said wall being of less circumferential extent than a complete circle to leave an opening therein, a rod extending through said cover and secured to said tray, a nut screwed on the upper end of said rod and disposed above said cover, said cover having an upwardly facing groove therein, a shield overlying said cover and concealing said nut, said shield having a flange received within said groove, a rod secured to said shield and extending through said cover, a nut screwed upon said second named rod and disposed beneath said cover, said second named nut being accessible through the opening in said wall.

WALTER F. OI-IME. 

